- The cargo must not rest against the tarpaulin.
- Tarpaulins must be in a roadworthy condition. Small holes or rips of up to 3 cm in diameter or length are permissible, whilst larger defects must be taped over or welded.
- The flexible straps must be pulled through all the eyelets in the tarpaulin.If any eyelets are missing, the flexible strap must be secured with wire or plastic strips.
- Tarpaulin eyelets must be in perfect condition.
- The distance between tarpaulin eyelets must be 200 mm maximum and 300 mm maximum around stanchions and door locks.
- Zigzag fastening using single hooks to secure tarpaulins is not allowed.
- The external roof bows must not be bent (tarpaulin sags). A loading unit with fewer than three horizontal insert boards (lengthwise and rearwise) between the stanchions is not allowed. The stanchions must not be inserted at an angle.
- The TIR cable (securing rope) must be pulled through the tarpaulin eyelets. A maximum of three missing, but not adjoining, tarpaulin eyelets is permissible for horizontal tarpaulin securing, if the TIR cable is secured with wire or plastic strips. The same applies to badly twisted and worn tarpaulin eyelet reinforcement rings.
- Tarpaulin structures with rubber tie-downs are only allowed if TIR cable is also pulled through the tarpaulin eyelets (no hooks).
- The use of tie-downs to fasten cargo to tailgates or roof bows is not permitted.
- If all the tarpaulin eyelets at the rear of the loading unit are used to secure the tarpaulin, the ends of the securing rope may be tied in the form of square knots. No knots are allowed in any other part of the securing rope. An overlooked or missing tarpaulin eyelet is acceptable.
- The following securing ropes are permitted:
- Hemp or sisal ropes at least 8 mm in diameter, with clear plastic coating
- Steel wire ropes at least 3 mm in diameter with or without a clear plastic coating
As with tarpaulin structures, there must be no significant defects on the outer walls of loading units with box bodies.